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MAX9248ECM+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
General Description
The MAX9248/MAX9250 digital video serial-to-parallel
converters deserialize a total of 27 bits during data and
control phases. In the data phase, the LVDS serial input is
converted to 18 bits of parallel video data and in the con-
trol phase, the input is converted to 9 bits of parallel con-
trol data. The separate video and control phases take
advantage of video timing to reduce the serial-data rate.
The MAX9248/MAX9250 pair with the MAX9247 serializer
to form a complete digital video transmission system. For
operating frequencies less than 35MHz, the MAX9248/
MAX9250 can also pair with the MAX9217 serializer.
The MAX9248 features spread-spectrum capability,
allowing output data and clock to spread over a speci-
fied frequency range to reduce EMI. The data and
clock outputs are programmable for a spectrum spread
of ±4% or ±2%. The MAX9250 features output enable
input control to allow data busing.
Proprietary data decoding reduces EMI and provides
DC balance. The DC balance allows AC-coupling, pro-
viding isolation between the transmitting and receiving
ends of the interface. The MAX9248/MAX9250 feature a
selectable rising or falling output latch edge.
ESD tolerance is specified for ISO 10605 with ±10kV
Contact Discharge and ±30kV Air-Gap Discharge.
The MAX9248/MAX9250 operate from a +3.3V ±10%
core supply and feature a separate output supply for
interfacing to 1.8V to 3.3V logic-level inputs. These
devices are available in a 48-lead LQFP package and
are specified from -40°C to +85°C or -40°C to +105°C.
Applications
Navigation System Displays
In-Vehicle Entertainment Systems
Video Cameras
LCD Displays
Features
♦ Programmable ±4% or ±2% Spread-Spectrum
Output for Reduced EMI (MAX9248)
♦ Proprietary Data Decoding for DC Balance and
Reduced EMI
♦ Control Data Deserialized During Video Blanking
♦ Five Control Data Inputs are Single-Bit-Error
Tolerant
♦ Output Transition Time is Scaled to Operating
Frequency for Reduced EMI
♦ Staggered Output Switching Reduces EMI
♦ Output Enable Allows Busing of Outputs
(MAX9250)
♦ Clock Pulse Stretch on Lock
♦ Wide ±2% Reference Clock Tolerance
♦ Synchronizes to MAX9247 Serializer Without
External Control
♦ ISO 10605 and IEC 61000-4-2 Level 4
ESD Protection
♦ Separate Output Supply Allows Interface to 1.8V
to 3.3V Logic
♦ +3.3V Core Power Supply
♦ Space-Saving LQFP Package
♦ -40°C to +85°C and -40°C to +105°C Operating
Temperature Ranges
MAX9248/MAX9250
27-Bit, 2.5MHz to 42MHz
DC-Balanced LVDS Deserializers
________________________________________________________________
Maxim Integrated Products
1
PART TEMP RANGE PIN-PACKAGE
MAX9248ECM+ -40°C to +85°C 48 LQFP
MAX9248ECM/V+ -40°C to +85°C 48 LQFP
MAX9248GCM+ -40°C to +105°C 48 LQFP
MAX9248GCM/V+ -40°C to +105°C 48 LQFP
MAX9250ECM+ -40°C to +85°C 48 LQFP
MAX9250ECM/V+ -40°C to +85°C 48 LQFP
MAX9250GCM+ -40°C to +105°C 48 LQFP
MAX9250GCM/V+ -40°C to +105°C 48 LQFP
Ordering Information
19-3943; Rev 3; 4/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
EVALUATION KIT
AVAILABLE
Pin Configuration appears at end of data sheet.
MAX9248/MAX9250
27-Bit, 2.5MHz to 42MHz
DC-Balanced LVDS Deserializers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(V
CC_
= +3.0V to +3.6V, PWRDWN = high, differential input voltage ⏐V
ID
⏐ = 0.05V to 1.2V, input common-mode voltage V
CM
= ⏐V
ID
/ 2⏐
to V
CC
- ⏐V
ID
/ 2⏐, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at V
CC_
= +3.3V, ⏐V
ID
⏐ = 0.2V, V
CM
= 1.2V,
T
A
= +25°C.) (Notes 1, 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC_
to _GND........................................................-0.5V to +4.0V
Any Ground to Any Ground...................................-0.5V to +0.5V
IN+, IN- to LVDSGND............................................-0.5V to +4.0V
IN+, IN- Short Circuit to LVDSGND or V
CCLVDS
........Continuous
(R/F, OUTEN, RNG_, REFCLK, SS
PWRDWN) to GND................................. -0.5V to (V
CC
+ 0.5V)
(RGB_OUT[17:0], CNTL_OUT[8:0], DE_OUT, PCLK_OUT,
LOCK) to V
CCOGND
.............................-0.5V to (V
CCO
+ 0.5V)
Continuous Power Dissipation (T
A
= +70°C)
48-Lead LQFP (derate 21.7mW/°C above +70°C).....1739mW
ESD Protection
Machine Model (R
D
= 0Ω, C
S
= 200pF)
All Pins to GND............................................................±200V
Human Body Model (R
D
= 1.5kΩ, C
S
= 100pF)
All Pins to GND..............................................................±2kV
ISO 10605 (R
D
= 2kΩ, C
S
= 330pF)
Contact Discharge (IN+, IN-) to GND ............................±10kV
Air-Gap Discharge (IN+, IN-) to GND ............................±30kV
IEC 61000-4-2 (R
D
= 330Ω, C
S
= 150pF)
Contact Discharge (IN+, IN-) to GND ............................±10kV
Air-Gap Discharge (IN+, IN-) to GND ............................±15kV
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SINGLE-ENDED INPUTS (R/F, OUTEN, RNG0, RNG1, REFCLK, PWRDWN, SS)
High-Level Input Voltage V
IH
2.0 V
CC
+ 0.3 V
Low-Level Input Voltage V
IL
-0.3 +0.8 V
V
I N
= - 0.3V to 0 ( M AX 9248/
M AX 9250E C M ) ,
V
I N
= - 0.15V to 0 ( M AX 9248/
M AX 9250G C M ) ,
-100 +20
Input Current I
IN
PWRDWN =
high or low
V
IN
= 0
to (V
CC
+ 0.3V) -20 +20
µA
Input Clamp Voltage V
CL
I
CL
= -18mA -1.5 V
SINGLE-ENDED OUTPUTS (RGB_OUT[17:0], CNTL_OUT[8:0], DE_OUT, PCLK_OUT, LOCK)
I
OH
= -100µA V
CCO
- 0.1
I
OH
= -2mA, RNG1 = high V
CCO
- 0.35High-Level Output Voltage V
OH
I
OH
= -2mA, RNG1 = low V
CCO
- 0.4
V
I
OL
= 100µA 0.1
I
OL
= 2mA, RNG1 = high 0.3
Low-Level Output Voltage V
OL
I
OL
= 2mA, RNG1 = low 0.35
V
High-Impedance Output Current I
OZ
PWRDWN = low or OUTEN = low,
V
O
= -0.3V to (V
CCO
+ 0.3V)
-10 +10 µA
RNG1 = high, V
O
= 0 -10 -50
Output Short-Circuit Current I
OS
RNG1 = low, V
O
= 0 -7 -40
mA
MAX9248/MAX9250
27-Bit, 2.5MHz to 42MHz
DC-Balanced LVDS Deserializers
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC_
= +3.0V to +3.6V, PWRDWN = high, differential input voltage ⏐V
ID
⏐ = 0.05V to 1.2V, input common-mode voltage V
CM
= ⏐V
ID
/ 2⏐
to V
CC
- ⏐V
ID
/ 2⏐, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at V
CC_
= +3.3V, ⏐V
ID
⏐ = 0.2V, V
CM
= 1.2V,
T
A
= +25°C.) (Notes 1, 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LVDS INPUT (IN+, IN-)
Differential Input High Threshold V
TH
(Note 3) 50 mV
Differential Input Low Threshold V
TL
(Note 3) -50 mV
Input Current I
IN+
,
I
IN-
PWRDWN = high or low (Note 3) -40 +40 µA
MAX9248/MAX9250ECM 42 60 78
PWRDWN =
high or low
MAX9248/MAX9250GCM 42 60 88
MAX9248/MAX9250ECM 42 60 78
Input Bias Resistor (Note 3) R
IB
V
CC_
=
0 or open,
PWRDWN =
0 or open,
Figure 1
MAX9248/MAX9250GCM 42 60 88
kΩ
Power-Off Input Current I
INO+
,
I
INO-
V
CC_
= 0 or open,
PWRDWN = 0 or open (Note 3)
-60 +60 µA
POWER SUPPLY
2.5MHz 19
RNG1 = low
RNG0 = low
5MHz 33
5MHz 28
RNG1 = low
RNG0 = high
10MHz 49
10MHz 33
RNG1 = high
RNG0 = low
20MHz 59
20MHz 45
MAX9250
C
L
= 8pF,
worst-case
pattern,
Figure 2
RNG1 = high
RNG0 = high
42MHz 89
2.5MHz 31
RNG1 = low
RNG0 = low
5MHz 48
5MHz 40
RNG1 = low
RNG0 = high
10MHz 70
10MHz 49
RNG1 = high
RNG0 = low
20MHz 87
20MHz 68
35MHz 100
Worst-Case Supply Current
MAX9248
C
L
= 8pF,
worst-case
pattern,
Figure 2
RNG1 = high
RNG0 = high
42MHz 120
mA
Power-Down Supply Current I
CCZ
(Note 4) 50 µA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MAX9248ECM+T

Mfr. #:
Buy MAX9248ECM+T
Manufacturer:
Maxim Integrated
Description:
Serializers & Deserializers - Serdes 27Bit 2.5-42MHz DC Bl LVDS Deserializer
Lifecycle:
New from this manufacturer.
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